dbDownloadTemplate: Retrieve templates from an acoustics database

In monitoR: Acoustic Template Detection in R

Description

Download Acoustic Templates from a Database

Usage

dbDownloadTemplate(db.name = "acoustics", uid, pwd, type, names, 
                   species, FFTwl, FFTovlp, FFTwn, ...)

Arguments

db.name	Name of the ODBC connector data source corresponding to the acoustics database.
uid	User ID to allow ODBC connector to connect to database, if not present in ODBC connector.
pwd	Password to allow ODBC connector to connect to database, if not present in ODBC connector.
type	Type of templates to select. Character value of either "BIN" or "COR". Some partial matching is performed to accept "bt" and "ct", for example.
names	Optional character value or vector of template names to filter selection from the database. If missing all templates matching other filters are selected.
species	Optional character value or vector of species to filter selection from the database. If missing all templates matching other filters are selected.
FFTwl	Optional character value or vector of FFT window lengths to filter selection from the database. If missing all templates matching other filters are selected.
FFTovlp	Optional character value or vector of FFT window overlap to filter selection from the database. If missing all templates matching other filters are selected.
FFTwn	Optional character value or vector of FFT window names to filter selection from the database. If missing all templates matching other filters are selected.
...	Additional arguments to odbcConnect.

Details

This function assumes a database structure identical to that provided in the acoustics schema. If the username and password are present in the ODBC datasource they do not need to be provided. It is possible to store only the username in the datasource and enter a password, but the reverse will not work.

Value

An object of class TemplateList.

Note

In the acoustics database templates are broken into components, and vectors are stored as text objects in various fields. To stay beneath the maximum download vector size of sqlQuery, extraneous characters are removed from each vector during upload; some must be re-inserted during download. Space characters are not replaced, but all amplitude values for correlation templates are sign-inverted and converted from integers to floating point decimal. All decimals were rounded to the hundredth's place during upload. These measures are sometimes insufficient and users may find it useful to increase the maximum download vector size in sqlQuery (see the vignette “MySQL_DataSources_RODBC” for further details). Large templates may take more than several seconds to download; 2-10 seconds is normal for binary point matching templates, and 5-30 seconds is normal for correlation templates.

Author(s)

Jon Katz

See Also

dbUploadTemplate

Examples

## Not run: 
#If using the 'acoustics' schema verbatim:
btnw <- dbDownloadTemplate(
        type = "BIN", 
        names= c("template1", "template2")
        FFTwl = 512, 
        FFTovlp = 0, 
        FFTwn = "hanning")
        
#'acoustics' schema, different database name:
btnw <- dbDownloadTemplate(
        db.name = "LocalSQLdb", 
        uid = "EntryOnly" , 
        pwd = "07H23BBM", 
        type = "COR", 
        species = c("BTNW", "OVEN") 
        FFTwl = 512, 
        FFTovlp = 0, 
        FFTwn = "hanning")
## End(Not run)

monitoR documentation built on May 1, 2019, 6:28 p.m.